Thursday, January 2, 2014

ScienceDaily: Dark Matter News

ScienceDaily: Dark Matter News


Negative temperature negated

Posted: 20 Dec 2013 08:36 AM PST

Over the past 60 years, several theories and experiments have claimed the existence of negative absolute temperatures in certain quantum systems. This fueled speculations about hyper-efficient heat engines that could act as perpetual motion machines, and about ultracold atom gases as models for the mysterious Dark Energy in our Universe. Such claims researchers to re-evaluate the underlying thermodynamical formalism.

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